Bag making machine



April 3, 1934. A. POTDEVIN BAG MAKING MACHINE Filed June 1, 1951 7 Sheets-Sheet INVENTOR I W W BY ATTORNEY$- Apfil3,1934.

A.PoTDEvnq BAG MAKING MACHINE Filed June.1. 1 l

'7 'SheetsP-Sheet v73 I E a E g i i -lNVENTOR Mam;

- BY ATTORNEYS A. POTDEVIN BAG MAKING MACHINE April 3, 1934.

Filed June 1, 1931 7 Sheets-Sheet 3 April 3,

A. POTDEVIN BAG MARI NG MACHINE Filed June 1, 1931 7 Sheets-Sheet 4 April 3, 1934. A..POTDEVIN' ,9

BAG MAKING MACHINE r I Fiied June 1, 1931 7 Sheets-sheaf. 5

INVENTOR. 2; W

A TTORNEYS.

Apn il 3, 1 934. A. POTDEVIN BAG MAKING MACHINE 7 Sheets-Sheet 6' Filed June 1, 1931 INVENTOR.

' I ATTORNEYS.

April 3,1934. PQTDAEVIN 1,953,432

BAG MAKING MACHINE I Filed June 1, 1931 '7 Sheets-Sheet 7 ATTORNEYS.

Patented Apr. 3, 1934 PATENT OFFICE BAG MAKING MACHINE Adolph Potdevin, Garden City, N. Y., assignor to Potdevin Machin e Company,'Brooklyn, N. Y.,

a corporation of New York Application-June 1, 1931, Serial No. 541,308 39 Claims. (01. 93-14) This invention relates to an improved machine for the making of bags, and has for one of its objects the provision of a machine for this purpose which is of novel construction.

' A further object of the invention is the provision of a machine for the making of paper bags in which after the tube from which the bags are made has been cut off to the desired length the tube is given a movement laterally to insure thorough pastingof the bag seam.

- A further object of the invention is the provision of a construction in which a bag of an improved form is provide In the drawings accompanying this application:

Fig. 1 is( an elevationalview of the machine in its entirety;

Fig. 2 is a plan view of the machine of Fig. 1; Fig. 3 is a view substantially on the line 3-3 of Fig. 1;

Fig. 3a is an enlarged fragmentary view of an adjustable plate at the delivery end of the chains shown in Fig. 3;

Fig. 4 is a section on the line 4-4 of Fig. 3;

Fig. '5 is an elevational view of the feed and pressing rollers employed in my machine;

Fig. 6 is a view taken substantially on the line 6-6 of Fig; 1;

Fig. 7 is an elevational view of the apparatus of Fig. 6 looking from left to right;

'Fig. 8 is a plan view of the apparatus of Fig. '7 with a part of the apparatus of that figure removed; s

construction of Fig. 7;

Fig. 10 shows the same apparatus as in Fig. 9 but in a different position;

Fig. 11- is an enlarged view of certain details of construction shown in Fig. '7 substantially on the line 1111 of Fig. 8;

Fig. 12is likewise an enlarged view of a'detail of Fig. 7;. 7

Figs. 13 to 22, inclusive, are more or less perspective views showing the various operations involved in the making 01 the bag particularly in the folding of the bag bottom;

Fig. 23 shows the completed bag; and

Fig. 24 is a view of a construction employed where tubes only are being formed as distinguished from bags.

Referring to the drawings in detail. my improved machine comprises paste-applying mechanism shown generally at 1, tubing and tucking mechanism shown at 2, slitting mechanism shown at 3, cut off mechanism shown at 4, mechanism Fig. 9 is an enlarged view of a detail of the r for imparting 'a lateral travel to the bag tubes shown at 5, bottoming mechanism shown at 6 and delivery mechanism shown at '7.

The paper from which the bags are to be formed is taken from a supply roll 8 mounted at the right hand end of the machine, as seen in Fig. 1, the paper passing upwardly from this roll about rollers 9 and 10, and receiving a coating of paste along'its edge from a pasting roller shown at 11.

The paper then advances through the folding. and tucking mechanism above referred to and designated 2, and thence between slitter rollers 12 and 13 and lower rollers 14. Each of the slitter rollers is provided on its periphery with a knife 15 and as the paper which is now in tube form passes beneath these rollers the tube is slit longitudinally as shown in Fig. 13 where the slits have been designated 17 and 18. It is to be noted that these slits are in the panel 16 with, the side seam 19.

After the slitting operation the tubepasses between upper presser and feed rollers 20 and lower cooperating roller 22. The roller 20 which overlies the tube seam 19 comprises a pair of discs 23 and 240i the same diameter clamped to each other and mounted upon a shaft 25. The periphery of each of these discs is'herringboned with the discs set slightly staggered with respect to each other. As the tube passes through the machine the edges thereof are subjected to the pressing action of the rollers 20 and by oifsetting the'herringbone formation on the faces of the discs 23 and 24 which overlie the seam 19 I am assured that the entire face of the paper overthe seam is subjected to pressure thereby closing the seam throughout its en- I tire length, as above noted, and without deleteriously affecting the paste of the seam.

The tube next passes through the cutting off mechanism at 4. This cutting oil? mechanism comprises vertically running chains 26, carrying cutter blade 26' cooperating with fixed member 27. This is usual construction, the hold-back rollers being shown at 27" except that the chains run in the opposite direction to the usual construction so as to forin the flap F in the panel with slits 17 and 18 and seam 19. The tube after being cut oil is then passed to the carrier 5, above referred to, by feed rollers 28 and 29.

As the tube T leaves the last pair of rollers 28 it passes between two long rollers 29 and is projected by them into the lateral carrying mechanism 5. This mechanism is shown in Figs. 2, 3 and 4 and comprises a set 01' three lower carrier chains 30, 31, and 32 mounted at one end on sprockets 33, 34, and 35, respectively, carried on a 119 2 shaft 36 extending lengthwise of the machine and disposed adjacent one side frame of the machine, as seen in Fig. 2. This shaft which is mounted in suitable bearings also carries a bevel gear 3'7 at one end meshing with apositively driven bevel gear 38 to be referred to hereinafter. The three chains30, 31 and 32 extend crosswise of the ma- At the side of the machine frame opposite to.

the shaft 36 is a' shaft 43 parallel to the shaft 36 and carrying sprockets 44 for chains 45. These chains are provided on their outer faces with transverse bars 46 bridging the space between the chains. The outer ends of the chains 45 are supbe appreciated that if ported by sprockets 47 on a shaft 48. Below the lower lead of the chains 45. and between these chains and the upper lead of chains 30, 31 and 32 are plates 49. With the chains 30, 31, 32 and 45 traveling in the direction of the arrows shown on Fig. 3, it will the machine is properly timed a tubeT discharging from between the rollers 29 will fall upon the plates 49 in front of a set of the lugs 41 on the chains 30, 31 and 32 and be carried laterally, to the left as viewed in Fig. 3'.

A certain amount of pressure is applied to these tubes, during this part of their travel, by the bars 46 on the'chains 45'so that not only will the paste which has been applied to the tube be given a chance to dry but the seam will be pressed by the bars '46, these bars resting upon the tube lengthwise thereof and immediately over the seam for the full length thereof. When the tube reaches the sprockets 39 it passes about the periphery of these sprockets between the outer face of the chains 30, 31 and 32 and a guard whi'chis curved to substantially the same curve as the sprocket, and is delivered, with the seam side down, upon the lower plates 42 to be advanced by the lugs or pusher-s 41 along this plate until delivered to the main part of the machine again upon a plate 51.

To insure that the tube will be deposited proper- 1y upon the plates 49 by the rollers 29, and murder that the machine may be adjusted to accommodate tubes of different lengths, an adjustable 'stop 52 is provided adjacent the rollers 29 in the path of the tube leaving these rollers. In Fig. 4 I have shown a tube T which is supposed to have just left the rollers 29 and has notyet fallen upon the plates 49. It will be appreciated from this showing that by adjusting the stop 52 the machine will accommodate tubes longer or shorter than the tube T. I

To insure that the tubes will be properly delivered to the'plate 51, and in order that the machine may accommodate tubes of different widths, the delivery end of each of, the plates 42 is provided with an extension 42' adapted to be moved endwise relatively to the plates 42, this plate being curved downwardly slightly at its forward 9 end as seen in Figs. -3 and 3a. The endwise movement of this plate 42' is accomplished by loosening the bolt 43' and manually moving the plate 42' endwise as desired and securing the same in adjusted position by tightening the bolt 43'.

. To further insure proper depositing of the tubes 'upon the plate 51 this plate is provided'with ad-- justable stops 54. Beneath this plate 51 is a chain 55 extending lengthwise of the machine and mounted on sprockets 56 and 5'7 carried 0 shaf s 58 and 59,'respectively. This chain is provided with lugs 60 projecting-through the plate 51 and adapted to engage the end of each tube as the tubes are successively. deposited upon the plate, these lugs advancing the tubes successively tofeed roller segment 61 and cooperating roller 62 by which the tube is advanced to the bottoming mechanism 6 which will now be described.

v As above explained the tubes are now traveling with the seam side down and as they are advanced by the roller segment 61 and cooperating roller 62 to the bottoming mechanism they travel along the upper face of a plate 63 which, as will be seen from Fig. 11, is curved upwardly slightly at its end adjacent the periphery of the bottoming mechanism, so thatas the tube travels along this plate the end of the tube is pierced by a pin or pins 65 carried by a rotatable member 66 mounted on a driven-shaft 6'7. In addition the wall 64 of the bag which lies adjacent the member 66 is gripped at each side by rear side grippers 68 shown in gripping position in Fig. 8. These are rotatable with the member 66 and are adapted to As will be seen from Fig. 8 each of these grippers is mounted on a rod '70 in bearings '71, a spring '72 being provided for each gripper. The outer end of each rod is adapted to cooperate with a fixed cam 73 provided with dwells '74 and high spot '75. As the grippers are carried around with the rotary part of the bottoming mechanism and engage the high spot '75 of the cam '73 it will be apparent that the grippers will be moved inwardly against the action of the springs '72.

While the earns '73 are stationary they can be adjusted by adjusting members '76. As will be seen from Fig. 12 each of the cams is provided with an extension 7'7 cooperating with an adjusting member '76 mounted in a fixed standard '78 on the frame of-the machine, the threaded part of each adjusting member being threaded into the extension '77 to the cam. Consequently by rotating the members '76 the cams can be, rotated about theshaft 67 thereby varying the time atwhich the supporting rods '70 for the grippers engage the high spot '75 of the cams.

, For raising the grippers against the action of I then pulled downwardly by the springs '72 so as to grip one wall of the tube and carry it around with the rotary member 66.

To strip the paper from the pins, 65 I provide a plate 81 slotted to receive the pins, so that as" the member 66 is rotated slightly further than shown in Fig. 11 the paper will be stripped from the pins. v

The lower side or wall of the tube is gripped also. For this purpose I provide front side grippers 82 on the rotor of the bottoming mechanism,

at each side of the machine, similar to the grippers 68. Each of these grippers is carried on a rod 83, the outer end of each of which is adapted to engage the face of a fixed cam 84. Each of the grippers isprovided with a spring 85 tending to maintain the grippers outwardly and with a spring 85' formaintaining the grippers closed. To effect a lifting of the grippers I provide fixed the fingers will be lifted against the action of the springs 85. It will be appreciated, therefore, that as the bottoming 'mechanism rotates the front side grippers will be raised against the action of springs 85, moved inwardly over the edges of the lower wall of the tube and then allowed to be pulled down by the springs 85' to grip the tube.

We now have the lower wall of the tube gripped to the rotor 88 of the bottoming mechanism by the grippers 82 and the upper wall of the tube gripped to the rotor 66 by the grippers 68, and as these two rotors are traveling in opposite directions the bottom of the tube will be opened,v as shown in Fig. 17.

Inasmuch as the tube is seam side down the tab F at the leading end of the tube lies next to the rotor of the bottoming mechanism. To grip this tab or flap I provide a center gripper 90. This gripper is mounted on a shaft or stud 91, carrying a finger 92 adapted to engage the underside of a fixed cam 93. Spring 90 holds this gripper in closed position. Consequently as the tube T comes up tothe bottoming mechanism and the finger 92 engages the cam 93 the center gripper 90 will be raised, and on continued movement of the tube the tab F will pass beneath this gripper, the gripper closing down upon the tab under the action of the spring 90' as the finger 92 leaves the cam 93. I

As the upper wall 64 of the tube is carried around by the rotor 66 it will be creased on its face next to the rotor as shown at 94 and 95 in Fig. 16. The creaser bars which are designated 96 and 97 are shown in Fig. 11, for instance, and the creasing is for the purpose of facilitating folding over of the paper in the further operation of the forming of the bag bottom.

As the tube is carried around with the rotor of the bottoming mechanism in an anti-clockwise direction, as viewed in Fig. 11, it leaves the grip= pers 68 and passes beneathhold-down plates 98, adjustably mounted in supports 99. The advance of the tube continueswith the front side grippers 82 in gripping relation to the tube and with the forward or front gripper 90 gripping the tab F until the tube is again scored by the rotary scorers 100 and 101 on rotor .02 mounted on a shaft 103 for facilitating the folding of the paper in the further operation of forming the bottom.

The tube next advances to-the gluing mechanism. This gluing mechanism is shown in Figs. 7 and 11 and comprises a glue or paste pot 104 resting on an adjustable support 105, adjustment of the glue pot being effected by adjusting screw 106. Mounted in the glue pot on hearings in brackets 104' carrying the glue pot is gluing roller 107. This roller is adapted to apply glue or paste to the rotary glue segment 108 which is mounted on the shaft 109. This glue segment is of any shape desired, as for'instance so as to apply glue or paste to the tube in the form shown in plan at 110 in Fig. 8. The gluer is automatic in operation and for thisreason I have provided means whereby the gluing segment 103, gluing roller 107 and the glue pot 104 will be raised away from the rotor of the bottoming mechanism in the event that there is no bag tube in the machine to be glued so as to prevent the application of glue to the rotor.

Referring to Fig. 7 it will be seen that the shaft 109 is provided with a cam 111 adapted to engage a follower roller 112 on one end of a lever 113 pivoted intermediate its ends at 114. The end of the lever'opposite the roller 112 is provided with an adjustably mounted vertically extending plate 115, the adjustment of which is effected by adjusting screw 116, the plate being held in adjusted position by set screw 117. This plate is adapted to cooperate with a member 118 mounted immediately above the plate 115 on a shaft 119. Secured to this shaft also is a finger 120 also adjustable, being held in adjusted position by set screw 121. This finger 120 is adapted to be raised by a cam 1l8'cooperating with an arm 120' on theshaft 119. As aytube' is advanced the finger 120 is lifted before the leading edge of the tube reaches it, and is then allowed to drop upon the upper surface of the tube. The parts are so arranged that with the finger on the tube the member 118 will be rotated clockwise enough to move member 118 out of position where it would be engaged by the plate 115 on the lever 113 and rotation of the cam 111, rotating with the gluing segment 108 simply causes the lever 113 to rock. On the other hand should there be no bag in the machine the finger 120 after it has beenraised by cam 118 will be allowed to drop back upon the bottoming rotor so that the plate 118 will be left in position to be engaged by the plate'115 and upward movement of that end of the lever 113 is prevented. Consequently under these conditions when the cam 111 engages the roller 112, the roller being held against depression, the cam and bracket 104 together with the gluing segment 108, glue pot and gluing roller will be raised. the gluing segment being moved away from the periphery of the rotor of the bottoming mechanism, so that application of glue to the surface of this mechanism is avoided.

vBefore the second creasing operation above described, rear side grippers 122-carried by the rotor of the bottoming mechanism, come into play. These grippers are mounted'on rods 123 in a similar manner to the mounting of the grip pers 68 and are held outwardly by springs 124 and downwardly by springs 124. The outer ends of the rod 123 are adapted to engage fixed cam: 125. Here again the gripper is provided with a finger 126 adapted to engage a fixed cam 127. Consequently when the fingers 126 engage the cams 127 the grippers will be raised against the action of the springs 124 and engagement of the rods 123 with the fixed cams 125 will move the grippers inwardly against the action of the springs 124, so that the grippers will overlie the sides of the tube. .When the fingers 126 ride away from the cams 127 the grippers will drop under the action of the springs 124' into gripping or clamping position. The tube is now held by forward side grippers 82, rear side grippers 122 and the front or center gripper 90 (see Fig. 19).

Mounted adjacent the back side of the periph- I respectively, as shown on Fig. 19, these plates being cut away as shown at 133 and 134 to clear the glue or paste on the tube. V

Before the plates 133 and 134 operate, the finger 92 on the center gripper 90 will" have engaged the face of a fixed cam 137 to raise the "shown in Fig. 11, the forward side gripp rs 82 and the rear side grippers 122 still holding the tube to the rotor. The rear flap 139 of the tube as well as the forward fiap, due: to the spring of the paper and the action of the plates 133 and 134 are now slightly raised out of the plane of the tube (see Fig.

' The chains 128 carry a bar 138 which enters behind the rear flap 139, the trailing edge of which is slightly raised as shown in 10 due to the spring of the paper and theaction of the flap-raising plate 134 and folds this flap over, as'shown in Figs. 20 and 21. The rear flap 139 of the bag is to be folded, as shown in Figs. 21-

and 22,-just back of the grippers 122. This folding is done by the bar 138 as above pointed out, with the grippers in operative position. The cams 125 which are holding the side grippers 122 inwardly are provided with depressions or dwells,

140 so that as the rods 123 carrying the grippers come abreast of these dwells, after the fiap 139 has been folded over, the springs 124 will be free to move the grippers outwardly, and the fingers 126 engaging the cam 126' the grippers will be raised against the action of springs 124', the arrangement being such that the grippers will be moved inwardly after the 'rods 123 leave depressions 140, so that when the fingers 126 ride offthe cam126 the side grippers 122 will be pulled down by springs 124' to grip the tube over the flap 139 as shown in Fig. 21, prior to disengagement of roller 138 with the flap.

The folded over rear flap 139 is then engaged by segments 141 carried on the'shaft 132, as shown in Fig. 9, to eliminate anychance of the flap opening up again. v i

The front fiap 89 which it will be understood is standing up out of the plane of the tube then engages arms 142 mounted on a rod 143 extending transversely of the machine and mounted in the machine frame. A crank arm 144 is attached to this rod. Attached to this crank arm rocking motion to the arms 1421. These arms are provided for the purpose of engaging the forward flap of the bag or tube so that as the same continues its advance this flap will be folded over,

finally passing between a plate 150. mounted on the bed of the machine and the periphery of the rotor of the bottoming mechanism, which com pletes the bottoming operation, the tube then appearing as shown in Fig. 23.

Before the bag'leaves-the plate 150 it isengaged by rollers 151 mounted on arms 152 carried by a shaft 153. This shaft is provided with arms 154 to which are attached springs 155, the other ends of the springs being anchored on the frame of the machine. This holds the rollers 151 'up against the bags under the tension of the springs 155. The pressure of these rollers on the bags may be adjusted by the provision of arm 156 attached to the shaft 153, the upward movement of this arm being controlled by an adjusting screw 157. 1

The bag is still held to the drum of the bottoming mechanism by the front side grippers 82 and rear side grippers 122, the former being con- As will be seen from Fig. 7 the cams 125 and h r 1,053,432 front gripper 9o into-approximately the position 84 for the grippers 122 and 82, respectively, extend practically to the point where the tubes leave the bottoming mechanism, so that the tubes are held to the rotor of the bottoming mechanism until it it time to discharge them. As the fingers for the grippers 122 and 82 leave their respective cams the tube or bag will have left the rollers 151 and is ready to be discharged upon the upper surface of a conveyor 158 which is traveling to the ,left, as viewed in Fig. 7. The speed of this conveyor is such that the bags are deposited thereon in overlapped relation as also shown in Fig. 7. The bags are discharged upon this conveyor bottom side down.

Above the conveyor 158 is a conveyor 159. This conveyor passes under idler 160, over idler 161 and next to the reversing and discharge drum 162 to and about idler 163. The conveyor 158 passes about this drum on the outside of the conveyor 159 about idlers 164, 165, 166 and 167.

The drum is driven from motor 168, belt or chain 169 and pulley 170. The latter is mounted on a shaft 171 carrying a bevel gear 172. This bevel gear meshes with a bevel gear 173 on a shaft provided with worm 174. This worm meshes with a worm gear 1'75 on a shaft 176 which also carries spur gear 177 meshing with a large gear 178 on the shaft 179 of the drum.

The bags in their passage about the drum 162 r are inverted and are discharged at the point 180 bottom side up upon a platform 181. This platform is provided with a stop 182 which is adjustable-so that the platform or rather the stop may be adjusted to accommodate bags of different l n t s.

In some cases it is desirable to employ this machine for the making of tubes only, as distinguished from finished bags, in which event the tubes are discharged from the ends of the chains 30, 31 and 32. Fig. 24 illustrates the construction employed and it will be seen from this figure that the guard 50 has been removed and the tubes instead of passing about the sprockets 39 and returned to the main part of v the machine again are discharged at these sprockets upon a plat form 183. This platform may be carried on an arm 184 pivoted on the frame of the machine at 185 so as to be swung into and out of receiving position.

The drive for the machine may. be from any suitable source of power .to a pulley 186 on the main drive shaft 187.

This shaft is provided with a gear 188 which through gears 189 and 190 drives the rolls 13 and 14 which are geared together. The gear 189 also drives the feed rollers 20 and 22; as well as a gear 191, which through intermediate gear 192,

drives'the lower roller of the first set of feed rollers 28 beyond the cutting off mechanism, these two rollers being geared together, and through an intermediate gear 193 drives the second set of feed rollers 28 which are also geared together. This last set of feed rollers through intermediate gear 194 drives the two small rollers 29 which are geared together and which deliver the tube into the mechanism 5.

x The bevel gear 38 which forms part of the drive for the chains 30, 31 and 32 is mounted on a shaft 195 and this shaft carries a gear 196 which meshes with a gear 197 on the lower shaft of the second feed rollers 28.

The chain 45 which constitutes part of the mechanism for transferring the tubes laterally and carries the presser bars 46 is, as above mentioned, mounted at one end on a sprocket 47. The

way the upper chain is driven from the sprocket shaft of the lower chain. By loosening the gear 198 on its shaft, the chain 45 can be set so .as to adjust the bars 46 carried thereby with respect to the lugs 41.

The drive shaft 187 is connected by a. chain 202 to shaft 203 carrying the lower feed roller 62. The end of this shaft opposite the chain 202 carries a gear 204 meshing with a broad-faced gear 205 which in turn meshes with the main drum gear 206 for the bottoming mechanism.

The rotor of the bottoming mechanism is driven from the drum gear 206 by a gear 207.

The shaft 103 carrying the creasers 100 and 101 is driven from drum gear 206 through a gear 225.

The gluing segment 108 is driven oh the main drum gear 206 by a gear 208 on the shaft 109.

The lower sprocket 130 of the sprocket chain 128 which is carried by the shaft 132 and the segment plate 141 also fast on thisshaft are driven from the main drum gear through gears 211.0, 211 and 212.

It will be seen from all the foregoing that'the paper is drawn from the supply roll 8 and after passing through the tubing and tucking mechanism, where the seam is formed, passes into the slitters to be slitted as shown at 17 and 18 in the same panel of the tube as the seam. The tube then passes between the rollers 20 and22 where the sides of the tube are pressed and thorough closing of the seam assured. The paper next passes through the cutting off mechanism where the tube is cut off to length and the tab F formed. Prior to this cutting ofi operation the paper or tube passed between the hold-back rollers 27", thefunction of which is to produce a slight slack in the tube at the instant the cutting operation is performed.

The severed section is then advanced, as above described, by the rollers 28 and 29 to be deposited upon the plate 49 where it is engaged by the lugs 41 which are running transversely of the machine, the tube being carried transversely of the machine about the sprocket '39 and back to the machine again, but at this time in an inverted position. To assure that the tubes will be properly discharged uponthe plate 51 from the discharge end of this transverse carrier mechanism I have provided just above this point an arm 216 pivoted at 217 and provided at its free end with an arm 218 provided with depending rods 219. The arm 216 is rocked on its pivot 21.7 by a cam 220 on the shaft carrying feed roller segment 61, this cam engaging a roller 221 on the arm 216. Aftercbeing deposited upon the plate 51 the tube is picked up by thelugs 60 and advanced to the feed rollers 61 and 62. The chain 55 which car- ,ries these lugs 60 is driven through gear 222 from gear 223 which is on the lower feed roll shafts carrying one of the sprockets for the chain 202. The tube is finally advanced to the bottoming drum where the leading end of the tube is opened as shown in Fig. 17 and above described and then folded back into the position shown in Fig. 18. It is to be noted thatby employing the grippers 82 and 122 on the bottoming mechanism that the bottom of the tube may be folded back in a smooth condition asillustrated in Fig. 19 so that when the paste or glue is applied thereto the surface of the turned back portion will be properly coated, assuring that when the rear flap 139 and the front flap 89 are folded over the crease or fold will be thoroughly pasted down and avoid all chance of leakage of the bag.

After the bag has been formed it is deposited upon the conveyor 158 to be carried thereby around the drum 162 to be finally discharged upon the platform 181 in finished condition and bottom side up. i

What I claim is:.- g

1. In a machine of the class described, the combination of tube forming mechanism including means for seaming the tube, slitting mechanism for slitting the tube in the seam panel or seam wall of the tube, means for advancing the tube endwise, means for severing the tube into bag lengths, and means extending transversely of the machine for eifectin'g a lateral travel of the bag lengths with the slit panel uppermost, and for returning the bag lengths to their original direction of travel in an inverted position.

, 2. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tube endwise, means for. severing the advancing tube into bag lengths, tube actuating means traveling in a direction transverse of the endwise movement of the tube,'driven rollers intermediate the severing mechanism and, the tube actuating means for discharging the bag lengths into the path of the said actuating means, and adjustable stop mechanism for accommodating the said actuatingmeans to varying bag lengths. A

3. ma machine of the class described, the com- 'bination of tube forming mechanism, means for advancing the tube endwise, means for dividing the tube into bag lengths, actuating means in the path ,of the advancing lengths and traveling in a direction transverse of the direction of advance of the lengths, and adapted positively to move the bag lengths laterally, and means above said actuating means adapted to apply pressure to the bottom end of the seam of the bag lengths dur-" ing the lateral advance of the bag lengths under the influence ofsaid actuating means.

4. In a machine of the class described, the combination of tubing mechanism, means for efiecting endwise travel or advance of the tube, means for dividing the tube into bag lengths, means for effecting positive lateral travel of the bag lengths, and means overlying said last mentioned means and the bag lengths for applying pressure to the seam throughoutits length during the lateral travel of the bag lengths.

5. In a machine of the class described, the corn- I bination of tubing mechanism, means for effecting endwise travel or advance of the tube, means for dividing the tube into bag lengths, means for effecting a lateral travel of the bag lengths,

and adjustablemeans overlying the bag lengths for applying pressure during their lateral travel to the seam thereof. a

'6. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tube longitudinally, means for dividing the tube into bag lengths, means thereafter to move the bag lengths laterally, and means comprising bars carried by spaced adjustable chains for engaging the bag lengths at the seam during lateral travel of the bag length to apply pressure thereto.

7. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tube endwise continuously, meansfor dividing the advancing tube into bag lengths,

combination of tube forming mechanism, means for advancing the tube endwise, means for dividing the tube into bag lengths, a plate extending transversely of the tube travel, means for depositing single bag lengths successively upon said plate, a lug-carrying chain beneath said plate the lugs of which extend through the plate to engage the bag lengths to move or advance the same laterally, chains overlying said plate and adjustable relatively to said lugs, and bars mounted thereon adapted to engage the bag lengths along the seam thereof as the same are being moved laterally by the lug-carrying chain.

9. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tube endwise, means for severing the tube into single bag lengths, a plate extending transversely of the tube travel, means for depositing the bag lengths on said plate crosswise thereof, adjustable means for controlling the deposit of the bag lengths upon the plate, lugs traveling lengthwise of said plate for engaging the side of the bag lengths to advance the same laterally, and adjustable bars overlying the bag lengths and adapted to engage the same along the seam thereof during the lateral travel of the bag lengths.

10. In a machine of the class described,'the

combination of tube forming mechanism, means for eifecting endwise advance of tubes from said forming mechanism, means for severing the advancing tube into bag lengths, a plate in the path of the bag lengths and extending transversely of their direction of travel, means for depositing the bag lengths successively on said plate, means for moving the bag lengths laterally along said plate, inverting the bag lengths and returning them in an inverted position to the main part of the machine. I w

11. In a machine of the class described, the

' combination of tube forming mechanism, cutting lengths, and means for receiving mechanism to divide the tube into bag lengths, means for advancing the bag lengths endwise, means traveling in a direction transverse of the endwise travel of the bag lengths for receiving the bag lengthsfrom said advancing mechanism and effecting lateral travel of the bag the bag lengths after their lateral travel again to advance the bag lengths endwise.

12. In a machine of the class described,the combination of tubing mechanism for tubing a continuously advancing paper web, means for dividing the advancing tubing into bag lengths, means traveling in a direction transverse of the endwise travel of the bag lengths for receiving the bag lengths and efiecting lateral travel thereof, advancing means for receiving the bag lengths from the transverse mechanism again to advance the lengths endwise, and adjustable means at the delivery end of the transverse means for regulating the delivery of the bag lengths from the transverse mechanism to the second-mentioned means for advancing the lengths endwise. I

13. In a machine of the class described, the combination of tube forming mechanism, means positively driven means at the discharge end of,

the transverse mechanism for controlling the deposit of the bag lengths upon the last-men- I tioned advancing means.

' 14. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tubing endwise, severing mechanism for severing the tubing into bag lengths, mechanism extending transversely of the endwise travel of the tubing for eiIecting a lateral'travel of the bag lengths, said means comprising sets of of which are adapted to engage the bag lengths and to advance the same along the uppermost of superimposed plates, lug-carrying chains the lugs said plates in a direction away from the main portion of the machine and to return the bag lengths .in an inverted position to the I main portion of the machine, and an adjustable extension on the discharge end of each of the lower plates for regulating the discharge of the bag lengths therefrom.

15. In a machine of the class described, the combination of tube forming mechanism, means for advancing the tubing endwise, means for dividing the tubing into bag lengths, means traveling in a direction transverse of the endwise travel of the tubing for receiving the bag lengths from the first-mentioned advancing means and effecting a lateral travel of the bag lengths, said transverse mechanism returning the bag lengths to the main portion of the machine in an inverted position, means for receiving the inverted bag lengths and advancing the same in such position endwise, and adjustable mechanism cooperating with the last-mentioned advancing means for accommodating the machine to bag lengths of different sizes.

16. In a machine of the class described, the combination of bag length forming mechanism, bottoming mechanism, means for advancing the bag lengths from the forming mechanism to .the bottoming mechanism, gluing mechanism adjacent the bottoming mechanismcomprising a glue or paste pot for applying glue or adhesive to the bag lengthsas they are carried around with the bottoming mechanism, and means including a positively actuated finger adjacent the bottoming mechanism for raising the gluing mechanism including the paste pot to prevent application of glue to the bottoming mechanism when no bag length is in the bottoming mechanism.

17. In a machine of the class described, the combination of bag length forming mechanism, bottoming mechanism including a rotor, means for advancing the bag lengths from the forming mechanism to the bottoming mechanism, gluing mechanism adjacent the bottoming mechanism comprising a glue or paste pot for applying glue or adhesive to the bag lengths, and means for moving the gluing mechanism including the paste pot in a direction away from the bottoming mechanism when no bag length is in position to be glued thereby to prevent application of glue or adhesive to the rotor of the bottoming mecha- 18; In a machine of the class described, bottoming mechanism comprising a rotor, means for detachably securing bag lengths to said rotor,

1,953,432 'gluing mechanism comprising a glue or paste pot for applying glue or adhesive to said bag lengths, a finger adapted to cooperate with said bag lengths, a driven cam adapted to raise said finger out of the path of. an advancing bag length and to permit said finger to drop back upon said bag length after the leading end of the bag length has been carried beyond the finger, said gluing mechanism with said finger resting upon the bag length being operated to apply glue or adhesive to the bag length, and means for moving said gluing mechanism including said glue or paste pot out of operative position when said finger is allowed to return to its lowermost position due to the absence of a bag length in the bottoming mechanism in position to be glued.

19. In a machine of the class described, bottoming mechanism comprising a rotor, means for detachably attaching bag lengths to said rotor, gluing mechanism adjacent the periphery of said rotor for applying glue or adhesive to said bag lengths andcomprising a glue tank or container and a glue applying segment, and means for preventing the application of glue to the rotor of the bottoming mechanism when no bag length is attached to the rotor in position to be glued and comprising a cam operative to move the gluing segment and glue tank away from the bottoming mechanism.

20. In a machine of the class described, the combination of bottoming mechanism comprising a rotor, means for detachably attaching bag lengths to said rotor, gluing mechanism in the path of the bag lengths as they are carried around by said rotor for applying glue or adhesive to said bag lengths, said gluing mechanism comprising a glue tank and a gluing segment, a lever pivoted intermediate its ends, a cam carried by the gluing mechanism adapted to rock said lever under normal gluing conditions, a positively actuated stop adjacent the opposite end of said lever, a finger connected to said stop and adapted to engage a bag length to be glued to maintain said stop out of operative position, said stop when a bag length is not in position engaging the end of said lever to prevent movement of the lever about its pivot, said cam by its engagement with the opposite end of the lever effecting a lifting of the gluing segment and glue tank in a direction away from the periphery of the rotor of the bottoming mechanism.

21. In a machine of the class described, the combination of bottoming mechanism comprising a rotor, means for detachably attaching bag lengths to said rotor, gluing mechanism adjacent the periphery of said rotor and comprising a gluing segment and a glue tank having a common mount, a lever pivoted intermediate its ends, a cam carried by said gluing mechanism and adapt- 1 ed to cooperate with one end of said lever, stop mechanism adjacent the other end of said lever,

a finger connected to said stop mechanism, a cam for positively actuating said finger to lift the same out of the path of a bag length being ad 'vanced by the bottoming mechanism rotor to the gluing mechanism, said cam being adapted to release said finger to allow the same to rest upon the advancing bag length to permit rocking of said lever by said cam, said stop mechanism with no bag length to be glued moving into the path of said lever whereby said cam by reason of its engagement with the other end of the lever will lift the gluing segment and glue tank away from the rotor of the bottoming mechanism.

22. In a machine of the class described, the.

combination of bottoming mechanism comprising a rotor, means for gripping the sides of a bag length panel lying against said rotor to attach the length to the rotor, means for gripping the upper panel of the bag length, said last-mentioned means traveling in a direction opposed to the direction ofgtravel of the rotor whereby the leading end of the upper panel is folded back upon itself, creasers in the path of the bag length as it is being carried around by the rotor for creasing the upper face of the lower panel of the bag length and the upper face of the turned back portion of the upper panel of the bag length, means for applying glue to the bag length after said creasing opera tion, and plates operating'after' the application of the glue or paste for engagingthe upper face of the lower panel of the bag length and the upper face of the turned back portion of the upper panel of the bag length for the purpose set forth.

23. In a machine of the class descrbed, bottomtraveling in a direction opposite that of the rotor for gripping the sides-of the upper panel of the bag length so as to fold the leading end of the upper panel back upon itself,means for releasing this second-mentioned gripping mechanism, gripping means for engaging the folded back portion of the upper panel to hold the same to said rotor, gluing mechanism for applying glue to the upper face of the lower panel of the bag length and to the upperfaceof the folded back portion of the upper panel with the bag length gripped to the rotor, and plates extending transversely of the bag length and adapted to engage the upper face of the lower panel of the bag length and the upper face of the folded back portion of the upper panel of the bag length to effect movement of the leading edge of the lower panel of the bag length away from the rotor of the bottoming'mechanism and a similar movement to the end of the folded back portion of the upper panel of the bag length. I

24. In a machine of the class described, bottoming mechanism comprising a rotor, grippers for gripping a bag length to said rotor and comprising a front gripper, means for turning back the leading end of the upper panel of the bag length to form a flap, grippers for gripping said turned back portionto the rotor, gluing mechanism for applying glue to the upper face of the lower panel of the bag length and to the upper face of the turned back portion of the upper.

raising of the leading edge of the lower panel and the trailing edge of the turned back. portionof the upper panel away from the rotor of the bottoming mechanism.

25. In a machine of the class described, bot-- taming mechanism comprising a rotor, means for gripping the sides of the lower panel of a bag length to attach the same .to the rotor, means for creasing the upper face of the upper panel of the bag length, gripping mechanism for gripping this uppcr panel and moving it in a direction away from said rotor to effect folding of 'of the lower panel and the folded back portion of the upper panel.

26. In a machine of the class described, bottoming mechanism comprising a rotor, means for gripping the sides of the lower panel of a bag length to attach the same to the rotor, means for creasing the upper face of the upper panel of the bag length, gripping mechanism'for gripping this upper panel and moving it in a direction away from said rotor to effect folding of the upper panel back upon itself, means for releasing said last-mentioned, gripping means, grippers carried by the rotor of the bottoming mechanism for gripping the folded back portion of the upper panel, and a second creasing mechanism operative after the operation of the last-mentioned gripping mechanism'for creasing the upper faces of the lower ,1 panel and the folded back portion of the upper panel.

27. In a machine of the class described, bottoming mechanism comprising a rotor, means for gripping the sides of the lower panel of a bag length to attach the same to the rotor, means for creasing the upper face of the upper panel of the bag length, rotary gripping mechanism for gripping this upperpanel and moving it in adirection away from said rotor to effect folding of the upper panel back upon itself, releasing mechanism for this rotory gripping mechanism, a second set of grippers carried by said rotor for gripping the folded back portion of the upper panel, a second creasing mechanism operative after the operation .of the last-mentioned gripping mechanism for creasing the upper faces of the lower panel and the folded back portion of the upper panel, gluing mechanism for applying an adhesive to the upper faces of the lower panel and the folded back portion of the upper panel after said second creasing operation, means for folding the folded back portion of the upper panel forward over the upper face of the lower panel, and means thereafter operative to move the last mentioned grippers into position upon the upper panel after the same has been folded forward.

28. The method which comprises tubing a con- I tinuously advancing paper web, dividing the advancing tubing into bag lengths, effecting a'lateral travel of said bag lengths followed by an endwise travel, and subjecting the seams of the bag lengths to pressure during their lateral travel.

29. The method which comprises tubing a continuously advancing paper web, severing the tubing into successive single bag lengths, effecting a lateral travel of the bag lengths followed by an endwise travel, and subjecting the seams ""of the bag lengths to pressure during their lateral travel.

30. The method which comprises tubing a continuously advancing paper web, severing the tubing into successive single bag, lengths, effecting lateral travel of thebag lengths out of their endwise travel and returning the bag lengths in an inverted position to their original direction of travel, and subjecting the seams of the bag lengths to pressure during their lateral travel.

31. The method which comprises tubing a continuously advancing paper web, severing the advancing tubing into single bag lengths, effecting original path of travel, returning the bag lengths to their original path of travel in an inverted position, bottoming the bag lengths with the bags traveling in an inverted position, and delivering 8 the completed bag to a receiving station in such position' 32. In a machine of the class described, the combination of tube forming mechanism including seaming mechanism, and feeding mechanism immediately following the seaming mechanism and, comprising a roller the periphery of which is herringboned, said herringbone formation engaging the tube at the seam. I

33. In a machine of the class described, tube forming mechanism comprising seaming mechanism, feeding mechanism for advancing the seamed tube forwardly and comprising a feed roller composed of two discs the periphery of each of which is herringbone, the formation on the periphery of one of these discs extending at an angle to the formation on the periphery of the adjacent disc and said'discs being mounted was to engage the seam of the tube as the tube is advanced.

34. In a machine of the class described, the combination of tube forming mechanism, meant for dividing the tubing into bag lengths, bottoming mechanism comprising a rotor, means for advancing the bag lengths to the rotor of the bottoming mechanism with the seam side lowermost, a receiving platform or station, and a conveyor for receiving the bag lengths from the rolbs tor of the'bottoming mechanism and delivering them to the receiving station or platform, said conveyor delivering the bag lengths to said station with the seam side lowermost.

- 35. In a machine of the class described, the combination of tube forming mechanism, means for dividing the tubing into bag lengths, bottoming mechanism comprising a rotor, means for advancing the bag lengths from the tube forming mechanism and delivering them to the rotor of the bottoming mechanism with the seam side ofthe bag lengths lying next the rotor of the bottoming mechanism and a conveyor for receiving the bag lengths from the bottoming mechanism and dischargingthem in an inverted-position with respect to the position in which they were received by said conveyor.

36. In a machine of the class described, the combination of tube forming mechanism including means for seaming the tube, means for severing the tube into bag lengths, means for advancing the bag lengths endwise, means for effecting a positive lateral travel of the bag lengths and means for imposing a pressure on the seam of the bag lengths throughout the full length of the seam during the movement of the bag lengths under the influence of the means. for effecting 1% their lateral travel. I

3'7. In a machine of the classdescribed bottoming mechanism comprising a rotor, side grippers for engaging the upper face of the rearwardly folded flap of a bag length being advanced 140 by said rotor, a roller for engaging the bag length just beneath the rear end of said flap, while said flap is held by said grippers, to fold the same forward, means for moving the grippers out of engagement with the flap during such forward 145 folding and means to reengage the grippers with the upper surface of the flap after the same has been folded forward and before the flap is disengaged by the said roller. I

38. In a bag making machine, bottoming 150 mechanism comprising a rotor; side grippers for engaging the upper face of the rearwardly extending flap of a bag length being advanced by said rotor, a bodily movable rod adapted to engage the bag length just beneath the rear edge of said flap to fold the same forward in the direction of advance of the bag length, means operating automatically to move said side grippers out of engagement with said flap after the forward folding of the flap by said rod has been initiated, and means operating automatically to affect engagement of said grippers with the upper face of the forwardly folded flap before the said rod has moved out of engagement therewith.

39. In a bag making machine, bottoming mech- 9 anism comprising a rotor, means for attaching bag lengths thereto to advance the same, side grippers for successively engaging the rearwardly extending flap of each bag length, a bodily driven rod for engaging the said flap adjacent its rear or trailing edge while the said side grippets are in operative position to fold the flap forward, means including cam mechanism for withdrawing the side grippers after the said rod has begun its operation and means to cause said side grippers to reengage the bag length on the upper face of the folded forward flap behind said rod and prior to movement of said rod out of engagement with the flap.

ADOLPH POTDEVIN. 

